Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=120269885&loc=SL75117546-209714

Name:	us-gaap_EquitySecuritiesFvNiUnrealizedGain
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent Events - Additional Information (Details) - USD ($) $ in Millions	Jul. 22, 2021	Jun. 30, 2021	Sep. 30, 2020
Subsequent Event [Line Items]
Cost method investments		$ 9.9	$ 8.9
Matterport, Inc.
Subsequent Event [Line Items]
Cost method investments		$ 8.7
Subsequent Event \| Matterport, Inc.
Subsequent Event [Line Items]
Unrealized gain on investment	$ 54.0